Ash-spraying apparatus



Feb. 15, 1927.

w. MINNYlcK Asa SPRAYING APPARATUS Filed June 24, 1926 fwn-wrak. I Mk1/IM A like.

Patented Feb. 15, 1927'. .o

.UNITED-'sums o y ,1,611,921 PATENTfoFFIcE.:

l Howann w. rammen, or nxnnsron'r, rnNNsYLvnNIA.

AsHfsrnaYINe urmrus.

lAmilication leil June 24128. Serial N. 118,179.

. This invention 'relates to spraying devices and morezin particular .to ash-spraylng de- A vices to be used in connection with coal' or' other' solid fuel burning furnaces and the The primary object of this invention is' toprovide a device for spraying ashes 4while still 'in the aslrpit of a furnace for the purtive'in operation and which may be applied o `substantally on line 2,-2 in `Fig. 1.

easily to old 4furnaces as well, as vbe readily incorporated in new ones without 'great exi' hpense inmaterial and labors Additional features and advantages of this, invention may appear in thev course of the following description considered in connection with the accompanying-drawing forming part' of `this application and in which:

Fig. 1 is a fragmentary frontselevation, partly shown 1n vertical section, of a. com'- moncoal furnace for use 1n averagejsize vresidences.

5'Figs 2 is a plan view offa section taken Fig. 3 shows a`plan view of a'dspiral spraytube used preferably Vwith small furnaces orl 'boilers of thel round-type.

'Fig'.4 represents anbther, design of spraytube' used in connection with small -urnaces l or boilers of the square' or rectangular type, said spray-tube being castfin one piece andl madev'preferably.l of malleable irom Fig. 5y -illustrates a. 'sprayingapparatus built up of lengths of fpipe and standard pipe-fittings and 4,especially intended to be' 1 applied to large'furnaces or' boilers.

a K af'sideelevation of a special valve ilsed inl my invention Afor controlling,`

D'the supply of the spray'l-water from' a watermain.

Fig. i is alsection-through afspray-tube,

'.showingthe preferred arrangement ofthef sprayholesftherem.

lto ascertain the amount'ofashes ing apparatus comprises a spray-tube 1 suitably securedto the base 2 of a furnace 3 a suitable distance below the' grate lLofthe latter. This spray-tube is controlled by the lever-valve 5 which in turn is connectedv to a water-main by means of thefpipe 6.

As shown especially in Fig. 6, this valve is composed of avalve body 7' having a ver. tic`ally movable and spring-closed plungerstem 8 provided at its upper end with a forked head 9 whereby the stem is connected, l

by means of the pin-connection 10, to the Voperating mlever 11 which is supportedand guided for up and dowr rocking movement by means of the unitar yoke member 12 secured onthe valve body and lhaving two upright arms v13 and 14, thesformer serving as a fulcrurn for the lever and the latter arm .having a longitudinal slot 15 ,to receive thergixn the lever and guide same,

The inner portion 16 of the lever has a uniform width, lbut the lower edge pf the outer portion 17 tapers downwardly from v the end and is provided with three or more steps 18, 19 and 20,' and `with a stop-lug 21. Theseesteps are intended to be engaged by the top edge 22 of the ash-door 2%, the latter being used tooperate the valve lever intliefollowing'mannerz-T i The valve having been properly installed in. relation tothe ash-door, whenithe latter is opened it f engages pu'rpose of which engagement being to merely lold the door in its-opened position, to

produce a greater drxaft or enable -a person in the ashpit.. When in this position the valve plunger` 'is not" all ed to cause a spray ofl water.

Upon furtheropening of the door, the latter A will engagethe step 19 and cause a moderate flow of 'waterfthrough the spray-tube upon the ashes, and finally, as the ash-door is swung full open, it will engage the step 20. and lift the operating lever 11 still more thereby causing a maximum spray ofvwater .on the ashes. Further movement of the door" will be\arrested by the stop-lug 21'.

While the ashes 'are'bemg sprayed,

m`a`y be shoveledoutof the pit or, if /preferred', the spraying -may be continued until all the ashes have been thoroughly wetted, after whichthe 'ash-door is brought back into engagement with-the irst step 19 and the ashes then removed. As will be readily the first step 18, `the understood, this spraying of the asheswi1lprevent -all formation ofy dustjand at the dimensioned to suit the type of sox Jby the door, the former is preferably roundlower end, as. indi- 1 ed oi'` at its buter and cated in Fig; '6 by the numeral 34..

The spray-tube is, lof course, shaped and furnace or boiler'upon which it is applied. Thus, in F ig. 3 there is shown a spiral spray-tube made of a single piece of pipe suitably bent; this spray-tube is to`be applied to small circular furnaces or boilers.- As stated before, Fig. 4 represents a cast spray-tube adapted for furnaces of the square or rectangular type. This spray-tube consistsof a manifold l24 having a threaded hub 25, for connection to a water supply pipe, and upon which any desired number of branches 26 are cast; These branches are provided` with spray. holes 27, generally disposed in staggered relation in two rows, to throw water over a large-area. y.

For larger boilers and, furnaces, I prefer, for reasons of economy, to make use. of a built-up spray-tube which ismade up of a large manifold pipe 28 composed of short lengths of pipe by means of the T-ttings 29 to which are also screwed the branch-pipes 30, the outer ends of which are closed 1n any desired and suitable manner,such as by the pipe-caps 31; The last branch-pipe is preferably secured to the manifold by means of a reducer elbow pipe lifting 32,' as shown in Fig. 5. The branch-pipes are, of course, perforated Wit two Ior more rows of spray-holes 33.

' As will be understood, as suggested herein, Y

there may be slight changes made in the cong struction andl arrangement of the details of my invention without departing from the' field and 'an' ash-door,

-ating lever for said valve, wsaidlever having which are connected together' engaged by said scope of the same, and Ijntend to include, al1 such variations; as fauwahin the scope of the appended claims, in this application in which the preferred forms only ofmy invention have been' disclosed.' I claim:-I 1. In icombination with a furnace having to spray water over the ashes deposited-in the ash-pit of said furnace, said system comprising a spray-tube and a spring-closed valvearranged to control said tube; an operal plurality of graded steps adapted to be engaged byI said ash-door to operate .said

valve, the first of said stpsvbeing adapted to hold said-door in open position only and the last step being adapted to open said valve 60 to effect4 the maximum spray of water, and the intermediate steps also being adapted for successive engagement by said door to open said valve gradually.

2. In combination with an ash-door, a water spraying system adapted to spray water over the ashes deposited in the ash-pit ofsaid furnace, said system comprising a spray-tube and a spring-closed valvearranged to control said tube;an op- 70 eratng lever for said valve, said lever having a plurality of graded steps adapted to be, ash-door to operate said valve, the first of said steps beingadapted to hold said door in open position only vand 75 the last step being adapted to open said valve to ei'ect 'the maximum spray of water, and the-intermediate steps valso being adapted for successive engagement by said door to open said valve graduall ,and means positioned on said lever and adjacent said last step for limiting the swing of said ash-door. I l

In testimony whereof I aliix my signature. V

HOWARD W. MIN N IGK.'

a .water spraying system adapted a furnace having stopping 

